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NDA2019MathematicsDeterminantsActual

If A is a square matrix of order n 1 , then which one of the following is correct?

Options

  1. Adet (- A )= det A
  2. Bdet (- A )=(-1)^ n det A
  3. Cdet (- A )=- det A
  4. Ddet (- A )= n det A

Correct answer

B. det (- A )=(-1)^ n det A

Step-by-step solution

A is square matrix of order n 1 . det (- A )=(-1)^ n det A

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